In a cogeneration system, a Rankine cycle operates with steam entering the turbine at 800 lb-/in.², 700°F, and a condenser pressure of 180 lb/in.² The isentropic turbine efficiency is 60% Energy rejected by the condensing steam is transferred to a separate process stream of water entering at 250°F, 140 lb/in.2 and exiting as saturated vapor at 140 lb/in.2 The mass flow rate of the process stream is 49,000 lb/h. Let To = 70°F. Po = 14.7 lb/in.²

In a cogeneration system, a Rankine cycle operates with steam entering the turbine at 800 lb-/in.², 700°F, and a condenser pressure of 180 lb/in.² The isentropic turbine efficiency is 60% Energy rejected by the condensing steam is transferred to a separate process stream of water entering at 250°F, 140 lb/in.2 and exiting as saturated vapor at 140 lb/in.2 The mass flow rate of the process stream is 49,000 lb/h. Let To = 70°F. Po = 14.7 lb/in.²

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A cycle has a qin=350Btu/lbm, and a thermal efficiency of 74%. In this case, the expected heat rejected qout is most likely: 320 Btu/lbm 90 Btu/lbm 350 Btu/lbm 260 Btu/lbm
The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.2, 800°F, at a rate of 8 x 104 lb/h. Eighty-eight percent of the steam expands through the turbine to 10 lbf/in.2 and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.2Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.2 before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let T0 = 60°F, p0 = 14.7 lbf/in.2 Determine:(a) the magnitude of the process heat production rate, in Btu/h.(b) the magnitude of the rate of exergy output, in Btu/h, as net work.(c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam…
What is, the net work output during a cycle is equal to net heat input
How does "power producing cycle" be applied in agriculture and machinery?
is the net work for any cycle Zero? why
The maximum thermal efficiency possible for a power cycle operating between 1200 F and 225 F is
Steam is the working fluid in the ideal Rankine cycle 1–2–3–4–1 and in the Carnot cycle 1–2–3’–4’–1 that both operate between pressures of 1.5 bar and 60 bar as shown in the T–s diagram in Fig. below. Both cycles incorporate the steady flow devices shown in Fig. For each cycle determine (a) the net power developed per unit mass of steam flowing, in kJ/kg, and (b) the thermal efficiency. Compare results and comment.
The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.2, 800°F, at a rate of 8 x 104 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.2 and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.2Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.2 before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let T0 = 60°F, p0 = 14.7 lbf/in.2 Determine:(a) the magnitude of the process heat production rate, in Btu/h.(b) the magnitude of the rate of exergy output, in Btu/h, as net work.(c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam…
In a test of cycle steam power plant, the measured rate of the steam supply was 7.1kg / s when the net rate of work output was 5000Kw. The feed water was supplied to the boiler at a temp of 38 ° C, and the superheated steam leaving the boiler was at 1.4 Mpa and 300 ° C. Calculate the thermal efficiency of the cycle and the heat rate, what would be the heat rate when expressed in BTU of heat input per kWh of work output.
An ideal Rankine cycle operates between the pressure limits of 15,000 kPa in the boiler and 15 kPa in the condenser. If the turbine inlet temperature is 500 deg C and the cycle produces 2500 kW of net work, determine the mass flow rate of the steam in kg/s. Refer to the tables below. a. 1.993 b. 2.122 c. 1.856 d. 2.016
Write legibly, provide manual step by step solution, and diagram for below given problem. In an ideal reheat cycle, the steam throttled condition is 8 Mpa and 480. The steam is then reheated to 2Mpa and 460. If turbine exhaust is 60, determine cycle efficiency. a. 38.3% c. 34.4%b. 24.3% d. 45.2%
Show the Carnot cycle on a T-S diagram and indicate the areas that represent the heat supplied QH, heat rejected QL, and the net work output Wnet,out on this diagram.